I'm responding to the fact that it wouldn't be hard for the Sox to make changes. The city isn't going to prevent them from doing anything.

Yes, but the Sox are tenants. They do not own the building. They would not be purchasing a new board. Soldier Field could use a new board. Theirs has that standard def stretch on a high def screen look. Yet no upgrade.
It would be like living in a rental unit with a perfectly working refrigerator. Say you want to upgrade to a stainless steel refrigerator. Would you just buy it and expect your landlord to reimburse you? Good luck with that.